Move logic to figure out if a socket can be reused into HttpStream.

net/http/http_basic_stream.h

Index: net/http/http_basic_stream.h
diff --git a/net/http/http_basic_stream.h b/net/http/http_basic_stream.h
index 194f7ef6c206380a55d1b4ab002222d9b98eb637..b3d8301955d1843035e29d3cc1be17227c0e8f6f 100644
--- a/net/http/http_basic_stream.h
+++ b/net/http/http_basic_stream.h
@@ -56,13 +56,11 @@ class HttpBasicStream : public HttpStream {
 
   bool IsResponseBodyComplete() const override;
 
-  bool CanFindEndOfResponse() const override;
-
   bool IsConnectionReused() const override;
 
   void SetConnectionReused() override;
 
-  bool IsConnectionReusable() const override;
+  bool CanReuseConnection() const override;
 
   int64 GetTotalReceivedBytes() const override;
 
@@ -72,8 +70,6 @@ class HttpBasicStream : public HttpStream {
 
   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;
 
-  bool IsSpdyHttpStream() const override;
-
   void Drain(HttpNetworkSession* session) override;
 
   void SetPriority(RequestPriority priority) override;